Water gas is a mixture of

Options

A. Air & water
B. `CO + H_2`
C. `CO + H_2 `
D. `CO_2 + H_2`

Explanation

**Step-by-Step Solution:**

1. **Understanding Water Gas Formation**: Water gas is produced through a chemical reaction involving steam and carbon. The process typically involves passing steam over red-hot carbon (coke).

2. **Chemical Reaction**: The reaction can be represented as:
\[ \text{C (s)} + \text{H}_2\text{O (g)} \rightarrow \text{CO (g)} + \text{H}_2\text{ (g)} \]
Here, carbon (C) reacts with water vapor (H₂O) to produce carbon monoxide (CO) and hydrogen gas (H₂).

3. **Composition of Water Gas**: From the above reaction, we can conclude that water gas is primarily composed of two gases:
- Carbon monoxide (CO)
- Hydrogen (H₂)

4. **Final Answer**: Therefore, water gas is a mixture of carbon monoxide (CO) and hydrogen (H₂).

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